No, they were the punching bags. The buttikoferi tried lip locking with the fasciatus a few times and then wanted nothing of it. I think fasciatus must have a nasty bite/teeth. most cichlids don't like to lip lock with them. they don't even particularly like to do it with each other. in a very large tank where the buttikoferi had a head start growing, they might mix ok but at relatively similar sizes, buttikoferi are no match.